1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bfc6edcbe4af4aec062a9182b7154c3851529900b8c9c1a5d84017cad4d2fb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee2b812e-ce9e-4901-bd0a-618b9951c339.json and https://artists.proofprofile.net/proofs/artist/ee2b812e-ce9e-4901-bd0a-618b9951c339.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1640cc3ef8259666af5d38b11ffd6bef53387d8577b441e7d529ce562c4b2a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA169900580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8e15b0a50eea2af6708c2abb5ff625e60a4143375857a88bfed4895e85964f. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA169900588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2804875b2a7b1a05ce440815d234146702fb194e4f30726ce3041e58444194b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:26:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA169900589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa322d9a55a493fc20b2ac49900dbf350d39efea445825e3259726c30d758524. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA169800253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4278123f7e80b3872f8389a80d653938d000ea007f3adcb8030b0142e1343c4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA169800254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b00a8a94b93ac26736d0e1daa32c195ea05b2d4f3aaa2605179233b63d23c1. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:46:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA169800255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf140f7f500bb34fd8c943a13365d76b9904e67e16a88c685d153b67daf5a8b1. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA169800256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87aa989a5a111ca22754ba5cc6b9f14f0171954074402b6357e8541504c5a572. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA169800257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a812e1e7ba9cd924f2f012e0aca6e4581f2a6a60add86cb0d5d07704443cb59. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA169800260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafa566db2075e06d83beaee7970bfacdf1f4ebcbfb9ead08694eab53b56f487. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA169800262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78117a659eb589c74066420949ca3e211933cfd8accbe1814b9d76f3cacdfd6. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160300436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8e6795bb0dde08d06f856809b8aaa79dc9d75ed63451a93e8569642a7b55ce. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160000526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412f22b2689963148c95e3c99b238ebbd981c24be52f334b89e87b81c64f957e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160400478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc824d66e1cecf7457c6d5b3c340a4320a7bca3d01d5a10c44c90d455a72b8cee. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:28:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25111ad8230446ecab2656964c22e1f0fbcb91d423bcc412f2fd3b22bfbcc5ed. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160400480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9b2f61b2cdd4aadcfc17c0cb6bec9e236cffc3ae65c43eb706514c95be4850. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160100547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad04f1d599b4951bf6c718bc3f4255f1ca9c3889efe5eb53d201170f7e9a8ad5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:22:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160100549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145b023bf836faac7f91edc43309f12198134470215bddfc470885924d2f1712. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160100553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cd7971a6181f7ed909cd7dcbd21ec6232faa94f8bf6d7992fadb6999e07b6b. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160500508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd853b4fc628fec0e3c1435dba79bdb7046510ff4c11aa819c062fde6bb13c8f5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:05:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958a17e863eabddf0b09d81635b42f63db2e133f365c65664ea5b481f0b9671d. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:05:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160500512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3270df370603d0f2a457d05dd19ab7946ff11e152ca95d05652020b15a6866a1. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:39:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160500514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3aa34800a80b5f706d84fc0a63ba296168ed9f93ee6d9c365b70ef220205fae. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:17:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160500515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfa0232824ba0b3f780c6dde4595bbdfd6c16282a5615d88e950a69c484c7b2. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:16:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160500517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299c960351bfab0e7cd009860f2d69bbd47d1f89924a671791c9b9117dd3f01a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160200536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190bce5a39dae621b3459fc4e9c7eeaa70f1e08de82dc121bb99725108f67c5b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160701455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2349d737333e8d2cc96fdd5a821dc7aaa07c832b9a7996c4ebaceb3b81a11148. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160802056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25a99d5b2ddb57431061fdac439ac029833defd11ac348d24b28f6adbd7ebe6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA160902423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cdecd5772fdd4c49d7ab4c23475699c5d604c99dbd4d4304fa03eb4ef55b0e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA56E1520090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2af04acd4629cae368074f2e7b2851fa24ce9b02a6d50dc39ec3774aba0fbd0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA56E1520091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0228ee849a29f15e2a7a646b11f53d5a21cabca1f8ff76d5d4f33a6fc5d382b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:22:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA56E1520094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02359720bb4158e32dc4be497f47f1378375daa55c0e633a44362d703d35f7cb. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:01:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA56E1520105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1757f9fcd0abffd3f569581120dda72ad978184c71a4b1815e9ffc911b2aa183. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA56E1520107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e70ff0d04703deb42bba55db5ab305b67377c52d5a02184067da0ecc084017. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA56E1520115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dad62a19bd07788c1068e971a4d8978bb4fb7bc0953aa4ceb398cfe1fb2af9. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T11:29:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA56E1520047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf097ebf8a13ea29b287160f2ca797f0948ee3ada697a665c7ce1de58258b130f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA56E1520048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b32860251b571ea7b558ead49ed886f2eb92bf6164d99051fdef0947ad58eb. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:34:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA56E1520051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f4a430ad470a548308379c16c3b98cc3fc617710971f8f31282b82c3713e87. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA56E1520052.